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package com.onlyxiahui.control.datepickersample;

import java.time.LocalDate;
import java.time.temporal.ChronoUnit;
import java.util.Locale;
import javafx.application.Application;
import javafx.geometry.HPos;
import javafx.scene.Scene;
import javafx.scene.control.DateCell;
import javafx.scene.control.DatePicker;
import javafx.scene.control.Label;
import javafx.scene.control.Tooltip;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Callback;

import java.time.chrono.*;

public class DatePickerSample extends Application {

    private Stage stage;
    private DatePicker checkInDatePicker;
    private DatePicker checkOutDatePicker;

    public static void main(String[] args) {
        Locale.setDefault(Locale.US);
        launch(args);        
    }

    @Override
    public void start(Stage stage) {
        this.stage = stage;
        stage.setTitle("DatePickerSample ");
        initUI();
        stage.show();
    }

    private void initUI() {
        VBox vbox = new VBox(20);
        vbox.setStyle("-fx-padding: 10;");
        Scene scene = new Scene(vbox, 400, 400);
        stage.setScene(scene);

        checkInDatePicker = new DatePicker();
        checkOutDatePicker = new DatePicker();                         
        checkInDatePicker.setValue(LocalDate.now());
        
        final Callback<DatePicker, DateCell> dayCellFactory = 
            new Callback<DatePicker, DateCell>() {
                @Override
                public DateCell call(final DatePicker datePicker) {
                    return new DateCell() {
                        @Override
                        public void updateItem(LocalDate item, boolean empty) {
                            super.updateItem(item, empty);
                           
                            if (item.isBefore(
                                    checkInDatePicker.getValue().plusDays(1))
                                ) {
                                    setDisable(true);
                                    setStyle("-fx-background-color: #ffc0cb;");                                       
                            }
                            long p = ChronoUnit.DAYS.between(
                                    checkInDatePicker.getValue(), item
                            );
                            setTooltip(new Tooltip(
                                "You're about to stay for " + p + " days")
                            );
                    }
                };
            }
        };

        checkOutDatePicker.setDayCellFactory(dayCellFactory);
        checkOutDatePicker.setValue(checkInDatePicker.getValue().plusDays(1));
        checkInDatePicker.setChronology(ThaiBuddhistChronology.INSTANCE);
        checkOutDatePicker.setChronology(HijrahChronology.INSTANCE);
        
        GridPane gridPane = new GridPane();
        gridPane.setHgap(10);
        gridPane.setVgap(10);

        Label checkInlabel = new Label("Check-In Date:");
        gridPane.add(checkInlabel, 0, 0);
        GridPane.setHalignment(checkInlabel, HPos.LEFT);

        gridPane.add(checkInDatePicker, 0, 1);

        Label checkOutlabel = new Label("Check-Out Date:");
        gridPane.add(checkOutlabel, 0, 2);
        GridPane.setHalignment(checkOutlabel, HPos.LEFT);

        gridPane.add(checkOutDatePicker, 0, 3);

        vbox.getChildren().add(gridPane);

    }
}

